Verdampfer & Coils

Understanding RBA: Rebuildable atomiser for self-winders

Q: What exactly is an RBA?

RBA stands for Rebuildable Atomizer. This refers to any type of atomiser where the user winds the heating coil themselves and secures it on a so-called build deck. Cotton is then pulled through the coil, soaked in e-liquid, and the atomiser is ready for use. The umbrella term RBA encompasses three sub-types: RTA (Rebuildable Tank Atomizer, with a tank for e-liquid), RDA (Rebuildable Dripping Atomizer, where e-liquid is dripped directly onto the cotton) and RDTA (a hybrid with a small tank beneath the deck). There is also the RBA Base – a small self-winding deck that is inserted into certain pod or sub-ohm tanks in place of a pre-made coil. The difference from a standard atomiser lies at its core: instead of a replaceable coil unit, you work with wire, cotton and screws. This requires basic knowledge, but rewards you with customisation.

RBA guide for self-winding vapers: structure, function and selection of rebuildable atomisers. Tips on RBA base, winding deck, coil assembly and buying in Switzerland.

An RBA is a vaporiser where you wind the coil yourself and insert the cotton by hand – this allows you to control the resistance, vapour production and flavour directly through the materials. For vapers who have outgrown pre-made coils, this opens the door to more precise setups and significantly lower running costs per tank. In the following guide, you’ll learn how a rebuildable atomiser is constructed, how the different variants differ, and what you should look out for when buying one. We’ll also explain common mistakes when winding for the first time and show you when it’s really worth getting started.

RBA stands for Rebuildable Atomizer. This refers to any type of atomiser where the user winds the heating coil themselves and secures it on a so-called build deck. Cotton is then pulled through the coil, soaked in e-liquid, and the atomiser is ready for use.

The umbrella term RBA encompasses three sub-types: RTA (Rebuildable Tank Atomizer, with a tank for e-liquid), RDA (Rebuildable Dripping Atomizer, where e-liquid is dripped directly onto the cotton) and RDTA (a hybrid with a small tank beneath the deck). There is also the RBA Base – a small self-winding deck that is inserted into certain pod or sub-ohm tanks in place of a pre-made coil.

The difference from a standard atomiser lies at its core: instead of a replaceable coil unit, you work with wire, cotton and screws. This requires basic knowledge, but rewards you with customisation.

The build deck has two contacts (positive and negative) with screws or clamps. You wind a resistance wire – typically Kanthal A1, Ni80 or 316L stainless steel – into a coil, secure the legs in the deck and trim them. After burning in the coil (pulsing at low power), you pull organic cotton through the coil and place the ends in the e-liquid channels.

Single coil vs. dual coil

A single coil operates at 0.6–1.2 ohms and delivers good flavour with moderate consumption. Two coils halve the total resistance, produce more vapour, but often require 60–100 watts and more battery power.

MTL vs. DL

For mouth-to-lung (MTL) vaping, use tight coils of around 1.0–1.5 ohms and airflow openings of 1–1.5 mm. Direct-to-lung (DL) setups use sub-ohm coils (0.2–0.5 ohms), wide air channels and a low VG content in the e-liquid.

Deck type: Velocity-style (two posts, side screws) is beginner-friendly. Postless and clamp decks are more precise but more demanding.
Single or dual: Single-coil decks are recommended for beginners – less material, quicker troubleshooting, lower battery drain.
Wire material: Kanthal is robust and forgiving of beginner mistakes. Ni80 heats up faster; stainless steel allows for temperature control (TC mode).
Airflow design: Bottom airflow produces cool vapour, top airflow minimises leaking. Check whether the atomiser suits your vaping style.
Tools and accessories: An ohmmeter or a mod with a resistance display is essential, along with coiling rods (2.5–3.0 mm), ceramic tweezers and sharp scissors.
Safety: Always measure the resistance before firing for the first time. Values below 0.15 ohms should only be handled by experts and used with tested, high-capacity 18650 or 21700 batteries – strictly for adults aged 18 and over.

A common mistake is packing the cotton too tightly: the channels cannot absorb liquid, the coil burns dry and tastes burnt. Conversely, too little cotton leads to leaking. Aim for a generous but not compressed fill.

Is an RBA worth it for beginners?

If you enjoy tinkering with technology and are prepared to invest 2–3 hours in learning, then yes. You’ll save money on coils in the long run and get better flavour. If you only vape occasionally, a pod system is simpler.

How long does a self-built coil last?

With clean e-liquid and regular dry burning, 1–3 weeks is realistic. You’ll need to change the cotton more frequently – usually every 3–7 days, depending on the sweetness of the e-liquid.

What is the difference between an RBA base and an RTA?

An RBA Base is a small build deck designed as a replacement coil for existing tanks, such as those found on pod mods. An RTA is a standalone atomiser with an integrated tank, designed exclusively for those who build their own coils.

What resistance is best for nicotine salt e-liquid?

Nicotine salts taste best in MTL setups at 0.8–1.2 ohms and 10–18 watts. Sub-ohm builds deliver too much nicotine per puff and are usually unsuitable for salt e-liquids.

An RBA is the logical next step for anyone who wants to customise their vaping experience – flavour, draw and battery life become adjustable variables rather than fixed parameters. Start with a simple single-coil deck, practise building coils with Kanthal and gradually work your way up to more complex setups. You’ll find suitable rebuildable models in our range of vaporisers, and the necessary materials are available in our selection of coils and winding accessories. Take your time to compare options before building your first custom coil deck.